2 Copyright 2003 VMware, Inc.
3 Copyright (C) Intel Corp. 2006. All Rights Reserved.
4 Intel funded Tungsten Graphics to
5 develop this 3D driver.
7 Permission is hereby granted, free of charge, to any person obtaining
8 a copy of this software and associated documentation files (the
9 "Software"), to deal in the Software without restriction, including
10 without limitation the rights to use, copy, modify, merge, publish,
11 distribute, sublicense, and/or sell copies of the Software, and to
12 permit persons to whom the Software is furnished to do so, subject to
13 the following conditions:
15 The above copyright notice and this permission notice (including the
16 next paragraph) shall be included in all copies or substantial
17 portions of the Software.
19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
23 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
25 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 **********************************************************************/
30 * Keith Whitwell <keithw@vmware.com>
34 #include "main/api_exec.h"
35 #include "main/context.h"
36 #include "main/fbobject.h"
37 #include "main/imports.h"
38 #include "main/macros.h"
39 #include "main/points.h"
40 #include "main/version.h"
41 #include "main/vtxfmt.h"
43 #include "vbo/vbo_context.h"
45 #include "drivers/common/driverfuncs.h"
46 #include "drivers/common/meta.h"
49 #include "brw_context.h"
50 #include "brw_defines.h"
52 #include "brw_state.h"
54 #include "intel_batchbuffer.h"
55 #include "intel_buffer_objects.h"
56 #include "intel_buffers.h"
57 #include "intel_fbo.h"
58 #include "intel_mipmap_tree.h"
59 #include "intel_pixel.h"
60 #include "intel_regions.h"
61 #include "intel_tex.h"
62 #include "intel_tex_obj.h"
64 #include "swrast_setup/swrast_setup.h"
66 #include "tnl/t_pipeline.h"
67 #include "glsl/ralloc.h"
69 /***************************************
70 * Mesa's Driver Functions
71 ***************************************/
74 brw_query_samples_for_format(struct gl_context
*ctx
, GLenum target
,
75 GLenum internalFormat
, int samples
[16])
77 struct brw_context
*brw
= brw_context(ctx
);
103 const char *const brw_vendor_string
= "Intel Open Source Technology Center";
106 brw_get_renderer_string(unsigned deviceID
)
109 static char buffer
[128];
113 #define CHIPSET(id, symbol, str) case id: chipset = str; break;
114 #include "pci_ids/i965_pci_ids.h"
116 chipset
= "Unknown Intel Chipset";
120 (void) driGetRendererString(buffer
, chipset
, 0);
124 static const GLubyte
*
125 intelGetString(struct gl_context
* ctx
, GLenum name
)
127 const struct brw_context
*const brw
= brw_context(ctx
);
131 return (GLubyte
*) brw_vendor_string
;
135 (GLubyte
*) brw_get_renderer_string(brw
->intelScreen
->deviceID
);
143 intel_viewport(struct gl_context
*ctx
)
145 struct brw_context
*brw
= brw_context(ctx
);
146 __DRIcontext
*driContext
= brw
->driContext
;
148 if (_mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
149 dri2InvalidateDrawable(driContext
->driDrawablePriv
);
150 dri2InvalidateDrawable(driContext
->driReadablePriv
);
155 intelInvalidateState(struct gl_context
* ctx
, GLuint new_state
)
157 struct brw_context
*brw
= brw_context(ctx
);
159 if (ctx
->swrast_context
)
160 _swrast_InvalidateState(ctx
, new_state
);
161 _vbo_InvalidateState(ctx
, new_state
);
163 brw
->NewGLState
|= new_state
;
166 #define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer)
169 intel_flush_front(struct gl_context
*ctx
)
171 struct brw_context
*brw
= brw_context(ctx
);
172 __DRIcontext
*driContext
= brw
->driContext
;
173 __DRIdrawable
*driDrawable
= driContext
->driDrawablePriv
;
174 __DRIscreen
*const screen
= brw
->intelScreen
->driScrnPriv
;
176 if (brw
->front_buffer_dirty
&& _mesa_is_winsys_fbo(ctx
->DrawBuffer
)) {
177 if (flushFront(screen
) && driDrawable
&&
178 driDrawable
->loaderPrivate
) {
180 /* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT.
182 * This potentially resolves both front and back buffer. It
183 * is unnecessary to resolve the back, but harms nothing except
184 * performance. And no one cares about front-buffer render
187 intel_resolve_for_dri2_flush(brw
, driDrawable
);
188 intel_batchbuffer_flush(brw
);
190 flushFront(screen
)(driDrawable
, driDrawable
->loaderPrivate
);
192 /* We set the dirty bit in intel_prepare_render() if we're
193 * front buffer rendering once we get there.
195 brw
->front_buffer_dirty
= false;
201 intel_glFlush(struct gl_context
*ctx
)
203 struct brw_context
*brw
= brw_context(ctx
);
205 intel_batchbuffer_flush(brw
);
206 intel_flush_front(ctx
);
207 if (brw_is_front_buffer_drawing(ctx
->DrawBuffer
))
208 brw
->need_throttle
= true;
212 intelFinish(struct gl_context
* ctx
)
214 struct brw_context
*brw
= brw_context(ctx
);
218 if (brw
->batch
.last_bo
)
219 drm_intel_bo_wait_rendering(brw
->batch
.last_bo
);
223 brw_init_driver_functions(struct brw_context
*brw
,
224 struct dd_function_table
*functions
)
226 _mesa_init_driver_functions(functions
);
228 /* GLX uses DRI2 invalidate events to handle window resizing.
229 * Unfortunately, EGL does not - libEGL is written in XCB (not Xlib),
230 * which doesn't provide a mechanism for snooping the event queues.
232 * So EGL still relies on viewport hacks to handle window resizing.
233 * This should go away with DRI3000.
235 if (!brw
->driContext
->driScreenPriv
->dri2
.useInvalidate
)
236 functions
->Viewport
= intel_viewport
;
238 functions
->Flush
= intel_glFlush
;
239 functions
->Finish
= intelFinish
;
240 functions
->GetString
= intelGetString
;
241 functions
->UpdateState
= intelInvalidateState
;
243 intelInitTextureFuncs(functions
);
244 intelInitTextureImageFuncs(functions
);
245 intelInitTextureSubImageFuncs(functions
);
246 intelInitTextureCopyImageFuncs(functions
);
247 intelInitClearFuncs(functions
);
248 intelInitBufferFuncs(functions
);
249 intelInitPixelFuncs(functions
);
250 intelInitBufferObjectFuncs(functions
);
251 intel_init_syncobj_functions(functions
);
252 brw_init_object_purgeable_functions(functions
);
254 brwInitFragProgFuncs( functions
);
255 brw_init_common_queryobj_functions(functions
);
257 gen6_init_queryobj_functions(functions
);
259 gen4_init_queryobj_functions(functions
);
261 functions
->QuerySamplesForFormat
= brw_query_samples_for_format
;
263 functions
->NewTransformFeedback
= brw_new_transform_feedback
;
264 functions
->DeleteTransformFeedback
= brw_delete_transform_feedback
;
265 functions
->GetTransformFeedbackVertexCount
=
266 brw_get_transform_feedback_vertex_count
;
268 functions
->BeginTransformFeedback
= gen7_begin_transform_feedback
;
269 functions
->EndTransformFeedback
= gen7_end_transform_feedback
;
270 functions
->PauseTransformFeedback
= gen7_pause_transform_feedback
;
271 functions
->ResumeTransformFeedback
= gen7_resume_transform_feedback
;
273 functions
->BeginTransformFeedback
= brw_begin_transform_feedback
;
274 functions
->EndTransformFeedback
= brw_end_transform_feedback
;
278 functions
->GetSamplePosition
= gen6_get_sample_position
;
282 brw_initialize_context_constants(struct brw_context
*brw
)
284 struct gl_context
*ctx
= &brw
->ctx
;
286 unsigned max_samplers
=
287 brw
->gen
>= 8 || brw
->is_haswell
? BRW_MAX_TEX_UNIT
: 16;
289 ctx
->Const
.QueryCounterBits
.Timestamp
= 36;
291 ctx
->Const
.StripTextureBorder
= true;
293 ctx
->Const
.MaxDualSourceDrawBuffers
= 1;
294 ctx
->Const
.MaxDrawBuffers
= BRW_MAX_DRAW_BUFFERS
;
295 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
= max_samplers
;
296 ctx
->Const
.MaxTextureCoordUnits
= 8; /* Mesa limit */
297 ctx
->Const
.MaxTextureUnits
=
298 MIN2(ctx
->Const
.MaxTextureCoordUnits
,
299 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
);
300 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
= max_samplers
;
302 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
= max_samplers
;
304 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
= 0;
305 if (getenv("INTEL_COMPUTE_SHADER")) {
306 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
= BRW_MAX_TEX_UNIT
;
307 ctx
->Const
.MaxUniformBufferBindings
+= 12;
309 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
= 0;
311 ctx
->Const
.MaxCombinedTextureImageUnits
=
312 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTextureImageUnits
+
313 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxTextureImageUnits
+
314 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxTextureImageUnits
+
315 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxTextureImageUnits
;
317 ctx
->Const
.MaxTextureLevels
= 14; /* 8192 */
318 if (ctx
->Const
.MaxTextureLevels
> MAX_TEXTURE_LEVELS
)
319 ctx
->Const
.MaxTextureLevels
= MAX_TEXTURE_LEVELS
;
320 ctx
->Const
.Max3DTextureLevels
= 12; /* 2048 */
321 ctx
->Const
.MaxCubeTextureLevels
= 14; /* 8192 */
322 ctx
->Const
.MaxTextureMbytes
= 1536;
325 ctx
->Const
.MaxArrayTextureLayers
= 2048;
327 ctx
->Const
.MaxArrayTextureLayers
= 512;
329 ctx
->Const
.MaxTextureRectSize
= 1 << 12;
331 ctx
->Const
.MaxTextureMaxAnisotropy
= 16.0;
333 ctx
->Const
.MaxRenderbufferSize
= 8192;
335 /* Hardware only supports a limited number of transform feedback buffers.
336 * So we need to override the Mesa default (which is based only on software
339 ctx
->Const
.MaxTransformFeedbackBuffers
= BRW_MAX_SOL_BUFFERS
;
341 /* On Gen6, in the worst case, we use up one binding table entry per
342 * transform feedback component (see comments above the definition of
343 * BRW_MAX_SOL_BINDINGS, in brw_context.h), so we need to advertise a value
344 * for MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS equal to
345 * BRW_MAX_SOL_BINDINGS.
347 * In "separate components" mode, we need to divide this value by
348 * BRW_MAX_SOL_BUFFERS, so that the total number of binding table entries
349 * used up by all buffers will not exceed BRW_MAX_SOL_BINDINGS.
351 ctx
->Const
.MaxTransformFeedbackInterleavedComponents
= BRW_MAX_SOL_BINDINGS
;
352 ctx
->Const
.MaxTransformFeedbackSeparateComponents
=
353 BRW_MAX_SOL_BINDINGS
/ BRW_MAX_SOL_BUFFERS
;
355 ctx
->Const
.AlwaysUseGetTransformFeedbackVertexCount
= true;
358 const int *msaa_modes
= intel_supported_msaa_modes(brw
->intelScreen
);
359 const int clamp_max_samples
=
360 driQueryOptioni(&brw
->optionCache
, "clamp_max_samples");
362 if (clamp_max_samples
< 0) {
363 max_samples
= msaa_modes
[0];
365 /* Select the largest supported MSAA mode that does not exceed
369 for (int i
= 0; msaa_modes
[i
] != 0; ++i
) {
370 if (msaa_modes
[i
] <= clamp_max_samples
) {
371 max_samples
= msaa_modes
[i
];
377 ctx
->Const
.MaxSamples
= max_samples
;
378 ctx
->Const
.MaxColorTextureSamples
= max_samples
;
379 ctx
->Const
.MaxDepthTextureSamples
= max_samples
;
380 ctx
->Const
.MaxIntegerSamples
= max_samples
;
383 ctx
->Const
.MaxProgramTextureGatherComponents
= 4;
384 else if (brw
->gen
== 6)
385 ctx
->Const
.MaxProgramTextureGatherComponents
= 1;
387 ctx
->Const
.MinLineWidth
= 1.0;
388 ctx
->Const
.MinLineWidthAA
= 1.0;
389 ctx
->Const
.MaxLineWidth
= 5.0;
390 ctx
->Const
.MaxLineWidthAA
= 5.0;
391 ctx
->Const
.LineWidthGranularity
= 0.5;
393 ctx
->Const
.MinPointSize
= 1.0;
394 ctx
->Const
.MinPointSizeAA
= 1.0;
395 ctx
->Const
.MaxPointSize
= 255.0;
396 ctx
->Const
.MaxPointSizeAA
= 255.0;
397 ctx
->Const
.PointSizeGranularity
= 1.0;
399 if (brw
->gen
>= 5 || brw
->is_g4x
)
400 ctx
->Const
.MaxClipPlanes
= 8;
402 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeInstructions
= 16 * 1024;
403 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAluInstructions
= 0;
404 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexInstructions
= 0;
405 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxTexIndirections
= 0;
406 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAluInstructions
= 0;
407 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexInstructions
= 0;
408 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTexIndirections
= 0;
409 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAttribs
= 16;
410 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeTemps
= 256;
411 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeAddressRegs
= 1;
412 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
= 1024;
413 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
=
414 MIN2(ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxNativeParameters
,
415 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxEnvParams
);
417 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeInstructions
= 1024;
418 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAluInstructions
= 1024;
419 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexInstructions
= 1024;
420 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTexIndirections
= 1024;
421 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAttribs
= 12;
422 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeTemps
= 256;
423 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeAddressRegs
= 0;
424 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
= 1024;
425 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
=
426 MIN2(ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxNativeParameters
,
427 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxEnvParams
);
429 /* Fragment shaders use real, 32-bit twos-complement integers for all
432 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMin
= 31;
433 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.RangeMax
= 30;
434 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
.Precision
= 0;
435 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].HighInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
436 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MediumInt
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].LowInt
;
439 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
440 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
441 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
442 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicCounters
= MAX_ATOMIC_COUNTERS
;
443 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxAtomicBuffers
= BRW_MAX_ABO
;
444 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAtomicBuffers
= BRW_MAX_ABO
;
445 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxAtomicBuffers
= BRW_MAX_ABO
;
446 ctx
->Const
.Program
[MESA_SHADER_COMPUTE
].MaxAtomicBuffers
= BRW_MAX_ABO
;
447 ctx
->Const
.MaxCombinedAtomicBuffers
= 3 * BRW_MAX_ABO
;
450 /* Gen6 converts quads to polygon in beginning of 3D pipeline,
451 * but we're not sure how it's actually done for vertex order,
452 * that affect provoking vertex decision. Always use last vertex
453 * convention for quad primitive which works as expected for now.
456 ctx
->Const
.QuadsFollowProvokingVertexConvention
= false;
458 ctx
->Const
.NativeIntegers
= true;
459 ctx
->Const
.UniformBooleanTrue
= 1;
461 /* From the gen4 PRM, volume 4 page 127:
463 * "For SURFTYPE_BUFFER non-rendertarget surfaces, this field specifies
464 * the base address of the first element of the surface, computed in
465 * software by adding the surface base address to the byte offset of
466 * the element in the buffer."
468 * However, unaligned accesses are slower, so enforce buffer alignment.
470 ctx
->Const
.UniformBufferOffsetAlignment
= 16;
471 ctx
->Const
.TextureBufferOffsetAlignment
= 16;
474 ctx
->Const
.MaxVarying
= 32;
475 ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxOutputComponents
= 128;
476 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxInputComponents
= 64;
477 ctx
->Const
.Program
[MESA_SHADER_GEOMETRY
].MaxOutputComponents
= 128;
478 ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxInputComponents
= 128;
481 /* We want the GLSL compiler to emit code that uses condition codes */
482 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
483 ctx
->ShaderCompilerOptions
[i
].MaxIfDepth
= brw
->gen
< 6 ? 16 : UINT_MAX
;
484 ctx
->ShaderCompilerOptions
[i
].EmitCondCodes
= true;
485 ctx
->ShaderCompilerOptions
[i
].EmitNoNoise
= true;
486 ctx
->ShaderCompilerOptions
[i
].EmitNoMainReturn
= true;
487 ctx
->ShaderCompilerOptions
[i
].EmitNoIndirectInput
= true;
488 ctx
->ShaderCompilerOptions
[i
].EmitNoIndirectOutput
= true;
490 ctx
->ShaderCompilerOptions
[i
].EmitNoIndirectUniform
=
491 (i
== MESA_SHADER_FRAGMENT
);
492 ctx
->ShaderCompilerOptions
[i
].EmitNoIndirectTemp
=
493 (i
== MESA_SHADER_FRAGMENT
);
494 ctx
->ShaderCompilerOptions
[i
].LowerClipDistance
= true;
497 ctx
->ShaderCompilerOptions
[MESA_SHADER_VERTEX
].OptimizeForAOS
= true;
498 ctx
->ShaderCompilerOptions
[MESA_SHADER_GEOMETRY
].OptimizeForAOS
= true;
500 /* ARB_viewport_array */
501 if (brw
->gen
>= 7 && ctx
->API
== API_OPENGL_CORE
) {
502 ctx
->Const
.MaxViewports
= GEN7_NUM_VIEWPORTS
;
503 ctx
->Const
.ViewportSubpixelBits
= 0;
505 /* Cast to float before negating becuase MaxViewportWidth is unsigned.
507 ctx
->Const
.ViewportBounds
.Min
= -(float)ctx
->Const
.MaxViewportWidth
;
508 ctx
->Const
.ViewportBounds
.Max
= ctx
->Const
.MaxViewportWidth
;
513 * Process driconf (drirc) options, setting appropriate context flags.
515 * intelInitExtensions still pokes at optionCache directly, in order to
516 * avoid advertising various extensions. No flags are set, so it makes
517 * sense to continue doing that there.
520 brw_process_driconf_options(struct brw_context
*brw
)
522 struct gl_context
*ctx
= &brw
->ctx
;
524 driOptionCache
*options
= &brw
->optionCache
;
525 driParseConfigFiles(options
, &brw
->intelScreen
->optionCache
,
526 brw
->driContext
->driScreenPriv
->myNum
, "i965");
528 int bo_reuse_mode
= driQueryOptioni(options
, "bo_reuse");
529 switch (bo_reuse_mode
) {
530 case DRI_CONF_BO_REUSE_DISABLED
:
532 case DRI_CONF_BO_REUSE_ALL
:
533 intel_bufmgr_gem_enable_reuse(brw
->bufmgr
);
537 if (!driQueryOptionb(options
, "hiz")) {
538 brw
->has_hiz
= false;
539 /* On gen6, you can only do separate stencil with HIZ. */
541 brw
->has_separate_stencil
= false;
544 if (driQueryOptionb(options
, "always_flush_batch")) {
545 fprintf(stderr
, "flushing batchbuffer before/after each draw call\n");
546 brw
->always_flush_batch
= true;
549 if (driQueryOptionb(options
, "always_flush_cache")) {
550 fprintf(stderr
, "flushing GPU caches before/after each draw call\n");
551 brw
->always_flush_cache
= true;
554 if (driQueryOptionb(options
, "disable_throttling")) {
555 fprintf(stderr
, "disabling flush throttling\n");
556 brw
->disable_throttling
= true;
559 brw
->disable_derivative_optimization
=
560 driQueryOptionb(&brw
->optionCache
, "disable_derivative_optimization");
562 brw
->precompile
= driQueryOptionb(&brw
->optionCache
, "shader_precompile");
564 ctx
->Const
.ForceGLSLExtensionsWarn
=
565 driQueryOptionb(options
, "force_glsl_extensions_warn");
567 ctx
->Const
.DisableGLSLLineContinuations
=
568 driQueryOptionb(options
, "disable_glsl_line_continuations");
572 brwCreateContext(gl_api api
,
573 const struct gl_config
*mesaVis
,
574 __DRIcontext
*driContextPriv
,
575 unsigned major_version
,
576 unsigned minor_version
,
579 unsigned *dri_ctx_error
,
580 void *sharedContextPrivate
)
582 __DRIscreen
*sPriv
= driContextPriv
->driScreenPriv
;
583 struct gl_context
*shareCtx
= (struct gl_context
*) sharedContextPrivate
;
584 struct intel_screen
*screen
= sPriv
->driverPrivate
;
585 const struct brw_device_info
*devinfo
= screen
->devinfo
;
586 struct dd_function_table functions
;
588 /* Only allow the __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS flag if the kernel
589 * provides us with context reset notifications.
591 uint32_t allowed_flags
= __DRI_CTX_FLAG_DEBUG
592 | __DRI_CTX_FLAG_FORWARD_COMPATIBLE
;
594 if (screen
->has_context_reset_notification
)
595 allowed_flags
|= __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
;
597 if (flags
& ~allowed_flags
) {
598 *dri_ctx_error
= __DRI_CTX_ERROR_UNKNOWN_FLAG
;
602 struct brw_context
*brw
= rzalloc(NULL
, struct brw_context
);
604 fprintf(stderr
, "%s: failed to alloc context\n", __FUNCTION__
);
605 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
609 driContextPriv
->driverPrivate
= brw
;
610 brw
->driContext
= driContextPriv
;
611 brw
->intelScreen
= screen
;
612 brw
->bufmgr
= screen
->bufmgr
;
614 brw
->gen
= devinfo
->gen
;
615 brw
->gt
= devinfo
->gt
;
616 brw
->is_g4x
= devinfo
->is_g4x
;
617 brw
->is_baytrail
= devinfo
->is_baytrail
;
618 brw
->is_haswell
= devinfo
->is_haswell
;
619 brw
->has_llc
= devinfo
->has_llc
;
620 brw
->has_hiz
= devinfo
->has_hiz_and_separate_stencil
;
621 brw
->has_separate_stencil
= devinfo
->has_hiz_and_separate_stencil
;
622 brw
->has_pln
= devinfo
->has_pln
;
623 brw
->has_compr4
= devinfo
->has_compr4
;
624 brw
->has_surface_tile_offset
= devinfo
->has_surface_tile_offset
;
625 brw
->has_negative_rhw_bug
= devinfo
->has_negative_rhw_bug
;
626 brw
->needs_unlit_centroid_workaround
=
627 devinfo
->needs_unlit_centroid_workaround
;
629 brw
->must_use_separate_stencil
= screen
->hw_must_use_separate_stencil
;
630 brw
->has_swizzling
= screen
->hw_has_swizzling
;
633 gen8_init_vtable_surface_functions(brw
);
634 gen7_init_vtable_sampler_functions(brw
);
635 brw
->vtbl
.emit_depth_stencil_hiz
= gen8_emit_depth_stencil_hiz
;
636 } else if (brw
->gen
>= 7) {
637 gen7_init_vtable_surface_functions(brw
);
638 gen7_init_vtable_sampler_functions(brw
);
639 brw
->vtbl
.emit_depth_stencil_hiz
= gen7_emit_depth_stencil_hiz
;
641 gen4_init_vtable_surface_functions(brw
);
642 gen4_init_vtable_sampler_functions(brw
);
643 brw
->vtbl
.emit_depth_stencil_hiz
= brw_emit_depth_stencil_hiz
;
646 brw_init_driver_functions(brw
, &functions
);
649 functions
.GetGraphicsResetStatus
= brw_get_graphics_reset_status
;
651 struct gl_context
*ctx
= &brw
->ctx
;
653 if (!_mesa_initialize_context(ctx
, api
, mesaVis
, shareCtx
, &functions
)) {
654 *dri_ctx_error
= __DRI_CTX_ERROR_NO_MEMORY
;
655 fprintf(stderr
, "%s: failed to init mesa context\n", __FUNCTION__
);
656 intelDestroyContext(driContextPriv
);
660 driContextSetFlags(ctx
, flags
);
662 /* Initialize the software rasterizer and helper modules.
664 * As of GL 3.1 core, the gen4+ driver doesn't need the swrast context for
665 * software fallbacks (which we have to support on legacy GL to do weird
666 * glDrawPixels(), glBitmap(), and other functions).
668 if (api
!= API_OPENGL_CORE
&& api
!= API_OPENGLES2
) {
669 _swrast_CreateContext(ctx
);
672 _vbo_CreateContext(ctx
);
673 if (ctx
->swrast_context
) {
674 _tnl_CreateContext(ctx
);
675 TNL_CONTEXT(ctx
)->Driver
.RunPipeline
= _tnl_run_pipeline
;
676 _swsetup_CreateContext(ctx
);
678 /* Configure swrast to match hardware characteristics: */
679 _swrast_allow_pixel_fog(ctx
, false);
680 _swrast_allow_vertex_fog(ctx
, true);
683 _mesa_meta_init(ctx
);
685 brw_process_driconf_options(brw
);
686 brw_process_intel_debug_variable(brw
);
687 brw_initialize_context_constants(brw
);
689 ctx
->Const
.ResetStrategy
= notify_reset
690 ? GL_LOSE_CONTEXT_ON_RESET_ARB
: GL_NO_RESET_NOTIFICATION_ARB
;
692 /* Reinitialize the context point state. It depends on ctx->Const values. */
693 _mesa_init_point(ctx
);
697 intel_batchbuffer_init(brw
);
700 /* Create a new hardware context. Using a hardware context means that
701 * our GPU state will be saved/restored on context switch, allowing us
702 * to assume that the GPU is in the same state we left it in.
704 * This is required for transform feedback buffer offsets, query objects,
705 * and also allows us to reduce how much state we have to emit.
707 brw
->hw_ctx
= drm_intel_gem_context_create(brw
->bufmgr
);
710 fprintf(stderr
, "Gen6+ requires Kernel 3.6 or later.\n");
711 intelDestroyContext(driContextPriv
);
718 intelInitExtensions(ctx
);
720 brw_init_surface_formats(brw
);
722 if (brw
->is_g4x
|| brw
->gen
>= 5) {
723 brw
->CMD_VF_STATISTICS
= GM45_3DSTATE_VF_STATISTICS
;
724 brw
->CMD_PIPELINE_SELECT
= CMD_PIPELINE_SELECT_GM45
;
726 brw
->CMD_VF_STATISTICS
= GEN4_3DSTATE_VF_STATISTICS
;
727 brw
->CMD_PIPELINE_SELECT
= CMD_PIPELINE_SELECT_965
;
730 brw
->max_vs_threads
= devinfo
->max_vs_threads
;
731 brw
->max_gs_threads
= devinfo
->max_gs_threads
;
732 brw
->max_wm_threads
= devinfo
->max_wm_threads
;
733 brw
->urb
.size
= devinfo
->urb
.size
;
734 brw
->urb
.min_vs_entries
= devinfo
->urb
.min_vs_entries
;
735 brw
->urb
.max_vs_entries
= devinfo
->urb
.max_vs_entries
;
736 brw
->urb
.max_gs_entries
= devinfo
->urb
.max_gs_entries
;
738 /* Estimate the size of the mappable aperture into the GTT. There's an
739 * ioctl to get the whole GTT size, but not one to get the mappable subset.
740 * It turns out it's basically always 256MB, though some ancient hardware
743 uint32_t gtt_size
= 256 * 1024 * 1024;
745 /* We don't want to map two objects such that a memcpy between them would
746 * just fault one mapping in and then the other over and over forever. So
747 * we would need to divide the GTT size by 2. Additionally, some GTT is
748 * taken up by things like the framebuffer and the ringbuffer and such, so
749 * be more conservative.
751 brw
->max_gtt_map_object_size
= gtt_size
/ 4;
754 brw
->urb
.gen6_gs_previously_active
= false;
756 brw
->prim_restart
.in_progress
= false;
757 brw
->prim_restart
.enable_cut_index
= false;
758 brw
->gs
.enabled
= false;
761 brw
->curbe
.last_buf
= calloc(1, 4096);
762 brw
->curbe
.next_buf
= calloc(1, 4096);
765 ctx
->VertexProgram
._MaintainTnlProgram
= true;
766 ctx
->FragmentProgram
._MaintainTexEnvProgram
= true;
768 brw_draw_init( brw
);
770 if ((flags
& __DRI_CTX_FLAG_DEBUG
) != 0) {
771 /* Turn on some extra GL_ARB_debug_output generation. */
772 brw
->perf_debug
= true;
775 if ((flags
& __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS
) != 0)
776 ctx
->Const
.ContextFlags
|= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB
;
778 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
)
779 brw_init_shader_time(brw
);
781 _mesa_compute_version(ctx
);
783 _mesa_initialize_dispatch_tables(ctx
);
784 _mesa_initialize_vbo_vtxfmt(ctx
);
786 if (ctx
->Extensions
.AMD_performance_monitor
) {
787 brw_init_performance_monitors(brw
);
794 intelDestroyContext(__DRIcontext
* driContextPriv
)
796 struct brw_context
*brw
=
797 (struct brw_context
*) driContextPriv
->driverPrivate
;
798 struct gl_context
*ctx
= &brw
->ctx
;
800 assert(brw
); /* should never be null */
804 /* Dump a final BMP in case the application doesn't call SwapBuffers */
805 if (INTEL_DEBUG
& DEBUG_AUB
) {
806 intel_batchbuffer_flush(brw
);
807 aub_dump_bmp(&brw
->ctx
);
810 _mesa_meta_free(&brw
->ctx
);
812 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
) {
813 /* Force a report. */
814 brw
->shader_time
.report_time
= 0;
816 brw_collect_and_report_shader_time(brw
);
817 brw_destroy_shader_time(brw
);
820 brw_destroy_state(brw
);
821 brw_draw_destroy(brw
);
823 drm_intel_bo_unreference(brw
->curbe
.curbe_bo
);
825 free(brw
->curbe
.last_buf
);
826 free(brw
->curbe
.next_buf
);
828 drm_intel_gem_context_destroy(brw
->hw_ctx
);
830 if (ctx
->swrast_context
) {
831 _swsetup_DestroyContext(&brw
->ctx
);
832 _tnl_DestroyContext(&brw
->ctx
);
834 _vbo_DestroyContext(&brw
->ctx
);
836 if (ctx
->swrast_context
)
837 _swrast_DestroyContext(&brw
->ctx
);
839 intel_batchbuffer_free(brw
);
841 drm_intel_bo_unreference(brw
->first_post_swapbuffers_batch
);
842 brw
->first_post_swapbuffers_batch
= NULL
;
844 driDestroyOptionCache(&brw
->optionCache
);
846 /* free the Mesa context */
847 _mesa_free_context_data(&brw
->ctx
);
850 driContextPriv
->driverPrivate
= NULL
;
854 intelUnbindContext(__DRIcontext
* driContextPriv
)
856 /* Unset current context and dispath table */
857 _mesa_make_current(NULL
, NULL
, NULL
);
863 * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior
864 * on window system framebuffers.
866 * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if
867 * your renderbuffer can do sRGB encode, and you can flip a switch that does
868 * sRGB encode if the renderbuffer can handle it. You can ask specifically
869 * for a visual where you're guaranteed to be capable, but it turns out that
870 * everyone just makes all their ARGB8888 visuals capable and doesn't offer
871 * incapable ones, becuase there's no difference between the two in resources
872 * used. Applications thus get built that accidentally rely on the default
873 * visual choice being sRGB, so we make ours sRGB capable. Everything sounds
876 * But for GLES2/3, they decided that it was silly to not turn on sRGB encode
877 * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent.
878 * So they removed the enable knob and made it "if the renderbuffer is sRGB
879 * capable, do sRGB encode". Then, for your window system renderbuffers, you
880 * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals
881 * and get no sRGB encode (assuming that both kinds of visual are available).
882 * Thus our choice to support sRGB by default on our visuals for desktop would
883 * result in broken rendering of GLES apps that aren't expecting sRGB encode.
885 * Unfortunately, renderbuffer setup happens before a context is created. So
886 * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3
887 * context (without an sRGB visual, though we don't have sRGB visuals exposed
888 * yet), we go turn that back off before anyone finds out.
891 intel_gles3_srgb_workaround(struct brw_context
*brw
,
892 struct gl_framebuffer
*fb
)
894 struct gl_context
*ctx
= &brw
->ctx
;
896 if (_mesa_is_desktop_gl(ctx
) || !fb
->Visual
.sRGBCapable
)
899 /* Some day when we support the sRGB capable bit on visuals available for
900 * GLES, we'll need to respect that and not disable things here.
902 fb
->Visual
.sRGBCapable
= false;
903 for (int i
= 0; i
< BUFFER_COUNT
; i
++) {
904 if (fb
->Attachment
[i
].Renderbuffer
&&
905 fb
->Attachment
[i
].Renderbuffer
->Format
== MESA_FORMAT_B8G8R8A8_SRGB
) {
906 fb
->Attachment
[i
].Renderbuffer
->Format
= MESA_FORMAT_B8G8R8A8_UNORM
;
912 intelMakeCurrent(__DRIcontext
* driContextPriv
,
913 __DRIdrawable
* driDrawPriv
,
914 __DRIdrawable
* driReadPriv
)
916 struct brw_context
*brw
;
917 GET_CURRENT_CONTEXT(curCtx
);
920 brw
= (struct brw_context
*) driContextPriv
->driverPrivate
;
924 /* According to the glXMakeCurrent() man page: "Pending commands to
925 * the previous context, if any, are flushed before it is released."
926 * But only flush if we're actually changing contexts.
928 if (brw_context(curCtx
) && brw_context(curCtx
) != brw
) {
932 if (driContextPriv
) {
933 struct gl_context
*ctx
= &brw
->ctx
;
934 struct gl_framebuffer
*fb
, *readFb
;
936 if (driDrawPriv
== NULL
&& driReadPriv
== NULL
) {
937 fb
= _mesa_get_incomplete_framebuffer();
938 readFb
= _mesa_get_incomplete_framebuffer();
940 fb
= driDrawPriv
->driverPrivate
;
941 readFb
= driReadPriv
->driverPrivate
;
942 driContextPriv
->dri2
.draw_stamp
= driDrawPriv
->dri2
.stamp
- 1;
943 driContextPriv
->dri2
.read_stamp
= driReadPriv
->dri2
.stamp
- 1;
946 /* The sRGB workaround changes the renderbuffer's format. We must change
947 * the format before the renderbuffer's miptree get's allocated, otherwise
948 * the formats of the renderbuffer and its miptree will differ.
950 intel_gles3_srgb_workaround(brw
, fb
);
951 intel_gles3_srgb_workaround(brw
, readFb
);
953 /* If the context viewport hasn't been initialized, force a call out to
954 * the loader to get buffers so we have a drawable size for the initial
956 if (!brw
->ctx
.ViewportInitialized
)
957 intel_prepare_render(brw
);
959 _mesa_make_current(ctx
, fb
, readFb
);
961 _mesa_make_current(NULL
, NULL
, NULL
);
968 intel_resolve_for_dri2_flush(struct brw_context
*brw
,
969 __DRIdrawable
*drawable
)
972 /* MSAA and fast color clear are not supported, so don't waste time
973 * checking whether a resolve is needed.
978 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
979 struct intel_renderbuffer
*rb
;
981 /* Usually, only the back buffer will need to be downsampled. However,
982 * the front buffer will also need it if the user has rendered into it.
984 static const gl_buffer_index buffers
[2] = {
989 for (int i
= 0; i
< 2; ++i
) {
990 rb
= intel_get_renderbuffer(fb
, buffers
[i
]);
991 if (rb
== NULL
|| rb
->mt
== NULL
)
993 if (rb
->mt
->num_samples
<= 1)
994 intel_miptree_resolve_color(brw
, rb
->mt
);
996 intel_renderbuffer_downsample(brw
, rb
);
1001 intel_bits_per_pixel(const struct intel_renderbuffer
*rb
)
1003 return _mesa_get_format_bytes(intel_rb_format(rb
)) * 8;
1007 intel_query_dri2_buffers(struct brw_context
*brw
,
1008 __DRIdrawable
*drawable
,
1009 __DRIbuffer
**buffers
,
1013 intel_process_dri2_buffer(struct brw_context
*brw
,
1014 __DRIdrawable
*drawable
,
1015 __DRIbuffer
*buffer
,
1016 struct intel_renderbuffer
*rb
,
1017 const char *buffer_name
);
1020 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
);
1023 intel_update_dri2_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1025 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1026 struct intel_renderbuffer
*rb
;
1027 __DRIbuffer
*buffers
= NULL
;
1029 const char *region_name
;
1031 /* Set this up front, so that in case our buffers get invalidated
1032 * while we're getting new buffers, we don't clobber the stamp and
1033 * thus ignore the invalidate. */
1034 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1036 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1037 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1039 intel_query_dri2_buffers(brw
, drawable
, &buffers
, &count
);
1041 if (buffers
== NULL
)
1044 for (i
= 0; i
< count
; i
++) {
1045 switch (buffers
[i
].attachment
) {
1046 case __DRI_BUFFER_FRONT_LEFT
:
1047 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1048 region_name
= "dri2 front buffer";
1051 case __DRI_BUFFER_FAKE_FRONT_LEFT
:
1052 rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1053 region_name
= "dri2 fake front buffer";
1056 case __DRI_BUFFER_BACK_LEFT
:
1057 rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1058 region_name
= "dri2 back buffer";
1061 case __DRI_BUFFER_DEPTH
:
1062 case __DRI_BUFFER_HIZ
:
1063 case __DRI_BUFFER_DEPTH_STENCIL
:
1064 case __DRI_BUFFER_STENCIL
:
1065 case __DRI_BUFFER_ACCUM
:
1068 "unhandled buffer attach event, attachment type %d\n",
1069 buffers
[i
].attachment
);
1073 intel_process_dri2_buffer(brw
, drawable
, &buffers
[i
], rb
, region_name
);
1079 intel_update_renderbuffers(__DRIcontext
*context
, __DRIdrawable
*drawable
)
1081 struct brw_context
*brw
= context
->driverPrivate
;
1082 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1084 /* Set this up front, so that in case our buffers get invalidated
1085 * while we're getting new buffers, we don't clobber the stamp and
1086 * thus ignore the invalidate. */
1087 drawable
->lastStamp
= drawable
->dri2
.stamp
;
1089 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
))
1090 fprintf(stderr
, "enter %s, drawable %p\n", __func__
, drawable
);
1092 if (screen
->image
.loader
)
1093 intel_update_image_buffers(brw
, drawable
);
1095 intel_update_dri2_buffers(brw
, drawable
);
1097 driUpdateFramebufferSize(&brw
->ctx
, drawable
);
1101 * intel_prepare_render should be called anywhere that curent read/drawbuffer
1102 * state is required.
1105 intel_prepare_render(struct brw_context
*brw
)
1107 struct gl_context
*ctx
= &brw
->ctx
;
1108 __DRIcontext
*driContext
= brw
->driContext
;
1109 __DRIdrawable
*drawable
;
1111 drawable
= driContext
->driDrawablePriv
;
1112 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.draw_stamp
) {
1113 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1114 intel_update_renderbuffers(driContext
, drawable
);
1115 driContext
->dri2
.draw_stamp
= drawable
->dri2
.stamp
;
1118 drawable
= driContext
->driReadablePriv
;
1119 if (drawable
&& drawable
->dri2
.stamp
!= driContext
->dri2
.read_stamp
) {
1120 if (drawable
->lastStamp
!= drawable
->dri2
.stamp
)
1121 intel_update_renderbuffers(driContext
, drawable
);
1122 driContext
->dri2
.read_stamp
= drawable
->dri2
.stamp
;
1125 /* If we're currently rendering to the front buffer, the rendering
1126 * that will happen next will probably dirty the front buffer. So
1127 * mark it as dirty here.
1129 if (brw_is_front_buffer_drawing(ctx
->DrawBuffer
))
1130 brw
->front_buffer_dirty
= true;
1132 /* Wait for the swapbuffers before the one we just emitted, so we
1133 * don't get too many swaps outstanding for apps that are GPU-heavy
1134 * but not CPU-heavy.
1136 * We're using intelDRI2Flush (called from the loader before
1137 * swapbuffer) and glFlush (for front buffer rendering) as the
1138 * indicator that a frame is done and then throttle when we get
1139 * here as we prepare to render the next frame. At this point for
1140 * round trips for swap/copy and getting new buffers are done and
1141 * we'll spend less time waiting on the GPU.
1143 * Unfortunately, we don't have a handle to the batch containing
1144 * the swap, and getting our hands on that doesn't seem worth it,
1145 * so we just us the first batch we emitted after the last swap.
1147 if (brw
->need_throttle
&& brw
->first_post_swapbuffers_batch
) {
1148 if (!brw
->disable_throttling
)
1149 drm_intel_bo_wait_rendering(brw
->first_post_swapbuffers_batch
);
1150 drm_intel_bo_unreference(brw
->first_post_swapbuffers_batch
);
1151 brw
->first_post_swapbuffers_batch
= NULL
;
1152 brw
->need_throttle
= false;
1157 * \brief Query DRI2 to obtain a DRIdrawable's buffers.
1159 * To determine which DRI buffers to request, examine the renderbuffers
1160 * attached to the drawable's framebuffer. Then request the buffers with
1161 * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
1163 * This is called from intel_update_renderbuffers().
1165 * \param drawable Drawable whose buffers are queried.
1166 * \param buffers [out] List of buffers returned by DRI2 query.
1167 * \param buffer_count [out] Number of buffers returned.
1169 * \see intel_update_renderbuffers()
1170 * \see DRI2GetBuffers()
1171 * \see DRI2GetBuffersWithFormat()
1174 intel_query_dri2_buffers(struct brw_context
*brw
,
1175 __DRIdrawable
*drawable
,
1176 __DRIbuffer
**buffers
,
1179 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1180 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1182 unsigned attachments
[8];
1184 struct intel_renderbuffer
*front_rb
;
1185 struct intel_renderbuffer
*back_rb
;
1187 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1188 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1190 memset(attachments
, 0, sizeof(attachments
));
1191 if ((brw_is_front_buffer_drawing(fb
) ||
1192 brw_is_front_buffer_reading(fb
) ||
1193 !back_rb
) && front_rb
) {
1194 /* If a fake front buffer is in use, then querying for
1195 * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
1196 * the real front buffer to the fake front buffer. So before doing the
1197 * query, we need to make sure all the pending drawing has landed in the
1198 * real front buffer.
1200 intel_batchbuffer_flush(brw
);
1201 intel_flush_front(&brw
->ctx
);
1203 attachments
[i
++] = __DRI_BUFFER_FRONT_LEFT
;
1204 attachments
[i
++] = intel_bits_per_pixel(front_rb
);
1205 } else if (front_rb
&& brw
->front_buffer_dirty
) {
1206 /* We have pending front buffer rendering, but we aren't querying for a
1207 * front buffer. If the front buffer we have is a fake front buffer,
1208 * the X server is going to throw it away when it processes the query.
1209 * So before doing the query, make sure all the pending drawing has
1210 * landed in the real front buffer.
1212 intel_batchbuffer_flush(brw
);
1213 intel_flush_front(&brw
->ctx
);
1217 attachments
[i
++] = __DRI_BUFFER_BACK_LEFT
;
1218 attachments
[i
++] = intel_bits_per_pixel(back_rb
);
1221 assert(i
<= ARRAY_SIZE(attachments
));
1223 *buffers
= screen
->dri2
.loader
->getBuffersWithFormat(drawable
,
1228 drawable
->loaderPrivate
);
1232 * \brief Assign a DRI buffer's DRM region to a renderbuffer.
1234 * This is called from intel_update_renderbuffers().
1237 * DRI buffers whose attachment point is DRI2BufferStencil or
1238 * DRI2BufferDepthStencil are handled as special cases.
1240 * \param buffer_name is a human readable name, such as "dri2 front buffer",
1241 * that is passed to intel_region_alloc_for_handle().
1243 * \see intel_update_renderbuffers()
1244 * \see intel_region_alloc_for_handle()
1247 intel_process_dri2_buffer(struct brw_context
*brw
,
1248 __DRIdrawable
*drawable
,
1249 __DRIbuffer
*buffer
,
1250 struct intel_renderbuffer
*rb
,
1251 const char *buffer_name
)
1253 struct intel_region
*region
= NULL
;
1254 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1259 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1261 /* We try to avoid closing and reopening the same BO name, because the first
1262 * use of a mapping of the buffer involves a bunch of page faulting which is
1263 * moderately expensive.
1265 struct intel_mipmap_tree
*last_mt
;
1266 if (num_samples
== 0)
1269 last_mt
= rb
->singlesample_mt
;
1271 if (last_mt
&& last_mt
->region
->name
== buffer
->name
)
1274 if (unlikely(INTEL_DEBUG
& DEBUG_DRI
)) {
1276 "attaching buffer %d, at %d, cpp %d, pitch %d\n",
1277 buffer
->name
, buffer
->attachment
,
1278 buffer
->cpp
, buffer
->pitch
);
1281 intel_miptree_release(&rb
->mt
);
1282 region
= intel_region_alloc_for_handle(brw
->intelScreen
,
1291 "Failed to make region for returned DRI2 buffer "
1292 "(%dx%d, named %d).\n"
1293 "This is likely a bug in the X Server that will lead to a "
1295 drawable
->w
, drawable
->h
, buffer
->name
);
1299 intel_update_winsys_renderbuffer_miptree(brw
, rb
, region
);
1301 if (brw_is_front_buffer_drawing(fb
) &&
1302 (buffer
->attachment
== __DRI_BUFFER_FRONT_LEFT
||
1303 buffer
->attachment
== __DRI_BUFFER_FAKE_FRONT_LEFT
) &&
1304 rb
->Base
.Base
.NumSamples
> 1) {
1305 intel_renderbuffer_upsample(brw
, rb
);
1310 intel_region_release(®ion
);
1314 * \brief Query DRI image loader to obtain a DRIdrawable's buffers.
1316 * To determine which DRI buffers to request, examine the renderbuffers
1317 * attached to the drawable's framebuffer. Then request the buffers from
1320 * This is called from intel_update_renderbuffers().
1322 * \param drawable Drawable whose buffers are queried.
1323 * \param buffers [out] List of buffers returned by DRI2 query.
1324 * \param buffer_count [out] Number of buffers returned.
1326 * \see intel_update_renderbuffers()
1330 intel_update_image_buffer(struct brw_context
*intel
,
1331 __DRIdrawable
*drawable
,
1332 struct intel_renderbuffer
*rb
,
1334 enum __DRIimageBufferMask buffer_type
)
1336 struct intel_region
*region
= buffer
->region
;
1337 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1342 unsigned num_samples
= rb
->Base
.Base
.NumSamples
;
1344 /* Check and see if we're already bound to the right
1347 struct intel_mipmap_tree
*last_mt
;
1348 if (num_samples
== 0)
1351 last_mt
= rb
->singlesample_mt
;
1353 if (last_mt
&& last_mt
->region
->bo
== region
->bo
)
1356 intel_update_winsys_renderbuffer_miptree(intel
, rb
, region
);
1358 if (brw_is_front_buffer_drawing(fb
) &&
1359 buffer_type
== __DRI_IMAGE_BUFFER_FRONT
&&
1360 rb
->Base
.Base
.NumSamples
> 1) {
1361 intel_renderbuffer_upsample(intel
, rb
);
1366 intel_update_image_buffers(struct brw_context
*brw
, __DRIdrawable
*drawable
)
1368 struct gl_framebuffer
*fb
= drawable
->driverPrivate
;
1369 __DRIscreen
*screen
= brw
->intelScreen
->driScrnPriv
;
1370 struct intel_renderbuffer
*front_rb
;
1371 struct intel_renderbuffer
*back_rb
;
1372 struct __DRIimageList images
;
1373 unsigned int format
;
1374 uint32_t buffer_mask
= 0;
1376 front_rb
= intel_get_renderbuffer(fb
, BUFFER_FRONT_LEFT
);
1377 back_rb
= intel_get_renderbuffer(fb
, BUFFER_BACK_LEFT
);
1380 format
= intel_rb_format(back_rb
);
1382 format
= intel_rb_format(front_rb
);
1386 if (front_rb
&& (brw_is_front_buffer_drawing(fb
) ||
1387 brw_is_front_buffer_reading(fb
) || !back_rb
)) {
1388 buffer_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
1392 buffer_mask
|= __DRI_IMAGE_BUFFER_BACK
;
1394 (*screen
->image
.loader
->getBuffers
) (drawable
,
1395 driGLFormatToImageFormat(format
),
1396 &drawable
->dri2
.stamp
,
1397 drawable
->loaderPrivate
,
1401 if (images
.image_mask
& __DRI_IMAGE_BUFFER_FRONT
) {
1402 drawable
->w
= images
.front
->width
;
1403 drawable
->h
= images
.front
->height
;
1404 intel_update_image_buffer(brw
,
1408 __DRI_IMAGE_BUFFER_FRONT
);
1410 if (images
.image_mask
& __DRI_IMAGE_BUFFER_BACK
) {
1411 drawable
->w
= images
.back
->width
;
1412 drawable
->h
= images
.back
->height
;
1413 intel_update_image_buffer(brw
,
1417 __DRI_IMAGE_BUFFER_BACK
);